Friction-clutch



W. OBSTERLEIN.v Friotio n Gluto h.

N0. 229,552. Pafiented June 8,1880.

N. FErERs, F'KOTO-YLITHOGRAPHER. WASHINGTON, 11.x;

Ilwrrnn STATES WILHELM OESTERLEIN,'OF CINCINNATI, OHIO.

FRICTION-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 228,552, dated June 8, 1880. Application filed 1 1880. (No model.)

To all whom it may concern Be it known that I, WILHELM OESTERLEIN, a citizen of the United States, residing at Gineinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Friction-Clutches, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, in which-- Figure 1 represents a perspective view of my invention; Fig. 2, a side view of the pulley; Figs. 3 and 4, detached views of the plate carrying the lever or arm which actuates the friction-band; and Fig. 5 is' a detached sectional view of a portion of the friction-band.

The object of the present invention is to provide an efi'ective friction-clutch for transmitting power from a revolving pulley to a shaft without noise or strain to the machinery and the manner of carrying out my invention I will now describe in detail and the novel construction and combination of parts pointout in the claims.

The letterA indicates the loose pulley, which is constructed with a central interior annular hub, A, and A indicates portion of a shaft, to which a revolving motion is to be imparted from the loose pulley.

Upon the shaft, and bearing loosely agains the face of the interior hub, A, is firmlyseeured a circular metallic plate, B, and upon the periphery of said plate or disk is cast a projecting lug, h, in which is rigidly fixed a pin, 0, which projects laterally or inwardly over the central hub, A, but is free from contact therewith, and to this pin is attached one end of a friction-band, Gr.

Upon the shaft A is loosely arranged a radial lever, D, which bears against the circular plate or disk B and projects a short distance beyond the periphery of the disk, and in the outer end of said lever is rigidly fixed a pin,

c, which projects laterally or inwardly over the central hub, A, in a manner similar to the pin 0, and to said pin 0 is secured the other end of the friction-band G. This lever D is adapted to be swung on the shaft A by a movable cone, F, in order to force its outer end toward or from the pin 0 of the circular disk or plate B, to bring the band into or out of frictional contact with the central hub, A,

of the pulley; and this movement I provide for by means of a laterally-projecting arm, E, connected with the lever D, and against which arm the cone F operates.

In Fig. 3 the arm E is angular or in the form of a bell-crank lever, and it is pivoted at its angle a to the circular disk B, and its inner end is provided with a stud, b, which is arranged within an elongated slot, 0, in the lever D.

The outer or free end of the pivoted arm E is adapted to be acted upon by sliding the cone F inwardly toward the pulley, which has the effect of moving said arm E on its fulcrum a, forcing its free end outward toward the periphery of the plate or disk B, and such movement, acting on the lever D by its stud 1), draws the lever toward the pin 0 of the disk B, and thereby applies the friction-band upon the hub A, by which the rotary motion of the pulley is transmitted to the circular disk B, and by it to the shaft A this being due to the fact that one end of the friction-band is connected with the disk B.

In lieu of the arm E being arranged as above described, it may be directly attached to the lever D, as in Fig. 4., in which case said lever is made angular or in the form of a bell-crank lever, pivoted at its angle K to the plate B, and the lateral arm E is attached to or formed with the free end of the lever, the operation being the same as above set forththat is, the cone moves the arm E upward and vibrates the lever D on pivot K to draw the outer end of the lever toward the pin a of the plate B.

The friction-band may be of any suitable material, but is preferably composed of a leather strap backed by a strip of steel or other flexible metal riveted to the strap.

Heretofore a friction-clutch has been constructed in which a friction-band has been applied to the periphery of a hub on a revolving loose pulley, for the purpose of transmitting the rotary motion of the same to a shaft, and such, broadly, I disclaim.

Having fully described my invention, what I claim is 1. The combination, with a shaft and a loose pulley having an interior annular hub, of a circular disk, B, rigidly attached to the shaft and bearing loosely against the face of the interior hub, and having at its periphery a pin,

0, projecting inwardlyover the same, to which one end of the friction-band is attached, a pivoted radial lever, D, projecting beyond the circular plate or disk, and provided with a lateral pin, 0, to which the other end of the friction-band is attached, and an outwardlyextending arm, E, connected with said lever and adapted to be operated by a movable cone, F, onv the shaft, all substantially as and for the purpose described.

2. The combination, with a shaft and the loose pulley having the interior annular hub, of the disk or plate B, having at its periphery a lateral pin, 0, to which one end of the frictionband is attached, a radial lever, D, having 15 adapted to be operated by a movable cone, all 20 substantially as and for the purpose described.

WILI-IELM OESTERLEIN.

Vitnesses ADOLF RUBLE, N. M. DENNIS. 

